US Patent 10192224 Method and device for communicating transactional data

A method and system for communicating transactional data determines gift card data from a gift card offered for sale by a customer and customer information about the customer from an identity document of the customer. The gift card data is associated with the customer information. A balance of the gift card is determined based at least partly on the gift card data. A purchase offer for purchasing the gift card from the customer is calculated based at least partly on the balance. If the balance of the gift card changes, a fraud alert may be associated with the customer information of the customer.